US458452A

US458452A - Smith

Info

Publication number: US458452A
Authority: US
Publication date: 1891-08-25
Anticipated expiration: 1908-08-25

Description

(No Model.)

N. 0. GOLDSMITH.

v swnrcn STAND. No. 458,452. Patented Aug. 25, 1891.

m: reams P11R5 0a., wow-mac wsmuc-ron, n. c.

UNITED STATES PATENT OFFICE.

NATHANIEL O. GOLDSMITH, OF CINCINNATI, OHIO, ASSIGNOR TO THE \VEIR FROG COMPANY, OF SAME PLACE.

STAND.

SPEGIFIGATION forming part of Letters Patent No. 458,452, dated August 25, 1891.

Application filed January 27, 1891. Serial No. 379,256. (No model.)

To all whom it may concern.-

Be it known that I, NATHANIEL 0. GOLD- SMITH, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Switch- Stands, of which the following is a specification.

My invention relates to that class of switchstands which are called low-down stands, chiefly used in yards.

The object of the invention is to provide a low-down three-throw-switch stand, and in the accompanying drawings it is shown as adapted to be used for stub-switches.

The various features of my invention will be fully set forth in the description of the accompanying drawings, making a part of this specification, in which- Figure 1 is a top plan view of myimprovement, showing the switch stand and rails in normal position. Fig. 2 is a similar view showing the switch-rail moved by one throw. Fig. 3 is a Similar view showing the third position of the switch stand and rails. Fig. 4 is a side elevation of Fig. 1. Fig.5 is amodification of the switch-stand shown in Figs. 1, 2, and

1 represents the base-plate of the switchstand. 2 represents ears or ledges cast on the same, in which a bearing is formed for the crank-pin or journal.

3 represents a lever, the end of which is bent at right angles, which forms a crank, the shaft of which journals in the ears 2.

5 represents a secondary lever, the inner end of which is bent at right angles to form a crank 6, which journals in the lever 3, the two levers forming a compound crank. I have shown two forms of levers. In Fig. 4 the levers are single, and in Figs. 1, 2, and 3 they are shown as duplex or U-shaped levers, having the cranks and centers at either end, the inner lever 5 nesting within the outer lever 3. Either form of construction may be employed.

7 represents a pitman hinged to lever 5. 8 represents a switch-bar pivoted to the pitman 7.

9 represents the switch-rail.

10 represents the main-track rail; 11, a secondary branch rail, and 13 a third branch rail, with which rail 9 respectively engages.

It will be observed that the centers a, 4, and 6 are on a line with the center of the pitman when the switch is in normal position, (shown in Fig. 4,) forminga lock or dead-center to resist the side-thrust: of the train.

The switch-stand is operated as follows: If lever 3 be turned over, it will move on the

com ters

4 and 6, which will move the pitman 7 andthe lever 5 horizontally and will break the contact of the switch-rail 9 with rail 10 and connect the same with rail 11. If now the secondary lever 5 be turned over, the pitman 7 will be advanced another step, breaking connection of the rail 9 with rail ll and bringing it into contact with rail 13. The'levers 3 and 5 may be moved together and the switch-rail 9 moved from contact with rail 10 and into contact with rail 13. When the parts are in position shown in Fig. 2, the lever 3 may be thrown back and move the switchrail 9 to first position. Thus three different independent throws are obtained by the compound crank mechanism herein described.

Having described my invention, what I claim is- 1. In a three-throw-switch stand, the combination of the lever 3, pivoted to the base of the switch-stand, a lever 5, pivoted to lever 3, and a pitrnan 7, pivoted to lever 5, forming a compound three-throw switch, substantially as specified.

2. In combination with the duplex lever 3, pivoted to the switch-stand, the duplex lever 5, pivoted to lever 3, and the pitman 7, pivoted to the duplex lever 5, substantially as specified.

In testimony whereof I have hereunto set my hand.

NA"HANIEL O. GOLDSMITH.

Witnesses.-

T. SIMMONS, O. W. MILES.